158517812 has 12 divisors (see below), whose sum is σ = 277495680. Its totient is φ = 79233336.

The previous prime is 158517803. The next prime is 158517871. The reversal of 158517812 is 218715851.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17363 + ... + 24869.

It is an arithmetic number, because the mean of its divisors is an integer number (23124640).

Almost surely, 2^158517812 is an apocalyptic number.

It is an amenable number.

158517812 is a deficient number, since it is larger than the sum of its proper divisors (118977868).

158517812 is a wasteful number, since it uses less digits than its factorization.

158517812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12790 (or 12788 counting only the distinct ones).

The product of its digits is 22400, while the sum is 38.

The square root of 158517812 is about 12590.3856970309. The cubic root of 158517812 is about 541.2019545702.

The spelling of 158517812 in words is "one hundred fifty-eight million, five hundred seventeen thousand, eight hundred twelve".